If it's a second hand 5200 with a 128bit bus, then it's a card able to reach 7000-7500pts in 3DMark2001. With AA applied it's quite faster than GeForce4 cards, plus it's a decent performer with PS 1.1.

Forget about the DX9 stuff, though. It does not have the computational power to run "Dx9 titles" at a decent framerate.